Yes but Luffy never gave a speech about how your fate doesn't define who you are, and that only thing that mattters is what you believe in.Neji vs Naruto happened, and despite everything, Neji was absolutely 100% right, birthiright is the only thing that matters.
Luffy never bragged about being an underdog or morals like that, he just punches stronger.
Naruto forgives Murderers, genocidial maniacs, crazy people in the name of friendship. Guys let's be serious.
Naruto is a shit protagonist, in a manga that has great and forgotten supporting cast like Neji, Rock Lee, Gaara and Shikamaru.
Instead he went with Naruto who is an abysmal MC.